Volvo All Engines (2017 Emissions) Fault Code: P20BA00 PID: ACM Reductant Heater “A” Control Performance
Volvo All Engines (2017 Emissions) Fault Code: P20BA00 PID: ACM Reductant Heater “A” Control Performance
The aftertreatment control module (ACM) uses the aftertreatment diesel exhaust fluid (DEF) dosing pressure sensor value to adjust and maintain DEF pressure at the DEF dosing valve by controlling DEF pump speed. If the pressure decreases below expected value when the pump is in initial pressure build-up mode or if the pressure increases above expected value when pump is in idle speed mode, the ACM considers DEF pressure outside of normal operating range and indicates a malfunction in a DEF dosing pressure sensor.
Conditions for diagnostic trouble code (DTC):
1) Insufficient aftertreatment diesel exhaust fluid (DEF) dosage
Probable cause
1) DEF tank heating valve
2) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 1
3) Aftertreatment Diesel Exhaust Fluid (DEF) Line Heater 2
4) Actuator coolant lines
5) Damaged hoses and/or connections
6) Aftertreatment Diesel Exhaust Fluid (DEF) Pump
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